bbb bbd bbk bbm bbo bby bdb bdd bdk bdm bdo bdy bkb bkk bkm bko bmb bmd bmk bmm bmo bob bod bok bom boo boy by- byd byk bym byo dbb dbd dbk dbm dbo dby ddb ddd ddk ddm ddo ddy dkb dkk dkm dko dmb dmd dmk dmm dmo dob dod dok dom doo doy dy- dyb dyd dyk dym dyo dyy kbb kbd kbk kbm kbo kdb kdk kdm kdo kdy kkb kkk kkm kky kmb kmd kmk kmm kmo kob kod kok kom koo koy kyd kym kyo m-o mbb mbd mbk mbm mbo mdb mdd mdk mdm mdo mdy mkb mkd mkk mkm mko mky mmb mmd mmk mmm mmo mob mod mok mom moo moy my- myb myd myk mym myo ob- obb obd obk obm obo oby odb odd odm odo okb okd okk oko om- omb omd omm omo omy oo- oob ood ook oom ooo oyd oyo ybm yby ydo ydy ykk ykm ymm ymo yob yod yok yom yoo yoy yyb yyy